package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exceptions.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.BaseEntity;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import io.netty.util.internal.ObjectUtil;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.lang3.ObjectUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;


import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;


    @Autowired
    private SystemUserService systemUserService;

    @Override
    public CaptchaVo getcaptcha() {
        SpecCaptcha specCaptcha = new SpecCaptcha(130,48,4);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);

        //将验证码存储到redis中
        String code = specCaptcha.text().toLowerCase();
        String key= RedisConstant.ADMIN_LOGIN_PREFIX+ UUID.randomUUID().toString();
        redisTemplate.opsForValue().set(key,code,RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);

        //将图片和key存到vo返回

        String image=specCaptcha.toBase64();
        CaptchaVo captchaVo = new CaptchaVo(image, key);

        return captchaVo;
    }

    @Override
    public String login(LoginVo loginVo) {
        //1. 检验接收的验证码是否为null,不为null继续
        if(ObjectUtils.isEmpty(loginVo.getCaptchaKey())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }

        //2. 根据key判定redis的验证码是否过期
        String rediscode = (String) redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (ObjectUtils.isEmpty(rediscode)){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }

        //3. 进行验证码对比，相等继续
        if (!rediscode.equalsIgnoreCase(loginVo.getCaptchaCode())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }


        //4. 根据账号进行数据查询，查到的数据不为null继续
        LambdaQueryWrapper<SystemUser> lambdaQueryWrapper=new LambdaQueryWrapper();
        lambdaQueryWrapper.eq(SystemUser::getUsername,loginVo.getUsername());
        SystemUser systemUser = systemUserService.getOne(lambdaQueryWrapper);

        if (systemUser==null){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }

        //5. 对比密码（密码加密处理）
        if(!systemUser.getPassword().equals(DigestUtils.md5Hex(loginVo.getPassword()))){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }

        //6. 检查账号是否被禁
       if(systemUser.getStatus()== BaseStatus.DISABLE){
           throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
       }

        //7. jwtutils生成token返回即可
        String token = JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());

        return token;

    }


}
